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D (named dee "D" Oxford English Dictionary, 2nd edition (1989); 's Third New International Dictionary of the English Language, Unabridged (1993); "dee", op. cit.) is the fourth letter of the and the ISO basic Latin alphabet.


The Semitic letter may have developed from the for a fish or a door. There are many different Egyptian hieroglyphs that might have inspired this. In Semitic, Ancient Greek and Latin, the letter represented ; in the Etruscan alphabet the letter was superfluous but still retained (see letter B). The equivalent is Delta, Δ.

The (lower-case) form of 'd' consists of a loop and a tall vertical stroke. It developed by gradual variations on the majuscule (capital) form. In handwriting, it was common to start the arc to the left of the vertical stroke, resulting in a at the top of the arc. This serif was extended while the rest of the letter was reduced, resulting in an angled stroke and loop. The angled stroke slowly developed into a vertical stroke.

Use in writing systems
In most languages that use the Latin alphabet, and in the International Phonetic Alphabet, generally represents the voiced alveolar or voiced dental plosive . However, in the Vietnamese alphabet, it represents the sound in northern dialects or in southern dialects. (See D with stroke and Dz (digraph).) In it represents a prenasalized stop .
(1998). 9780824818982, University of Hawaii Press. .
In some languages where voiceless unaspirated stops contrast with voiceless aspirated stops, represents an unaspirated , while represents an aspirated . Examples of such languages include Icelandic, , and the transliteration of .

Other uses
  • The Ⅾ represents the number 500.
    (1983). 9780520038981, University of California Press. .
  • D is the grade below C but above E in the school grading system.

Related characters

Descendants and related characters in the Latin alphabet
  • Ɖ ɖ :
  • Ð ð : Latin letter Eth
  • D with : Đ đ Ɗ ɗ Ḋ ḋ Ḍ ḍ Ḑ ḑ Ď ď
  • IPA-specific symbols related to D:
  • Ꝺ ꝺ : D is used in various phonetic contexts
  • ᴅ ᴰ ᵈ : Small capital D and various modifier letters are used in the Uralic Phonetic Alphabet.
  • ȡ : D with curl is used in Sino-Tibetanist linguistics
  • Ƌ ƌ : D with topbar

Ancestors and siblings in other alphabets
  • 𐤃 : Semitic letter , from which the following symbols originally derive
    • Δ δ : letter Delta, from which the following symbols originally derive
      • : letter Delta
      • Д д : letter De
      • 𐌃 : Old Italic D, the ancestor of modern Latin D
        • : letter , which is possibly a descendant of Old Italic D
        • Runic letter , another possible descendant of Old Italic D
      • : letter daaz, which derives from Greek Delta

Derived signs, symbols and abbreviations
  • ₫ : Đồng sign
  • ∂ : the partial derivative symbol, \part

Computing codes

Other representations
In British Sign Language (BSL), the letter 'd' is indicated by signing with the right hand held with the index and thumb extended and slightly curved, and the tip of the thumb and finger held against the extended index of the left hand.

External links
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